What is the domain of f(x)= 9/(\frac{x){x+9}} ?

The domain of f(x)= 9/(\frac{x){x+9}} is x 0

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domain of f(x)= 9/(\frac{x){x+9}}

domain

f (x) = \frac{9}{\frac{x}{x + 9}}

x < - 9 or - 9 < x < 0 or x > 0

Interval Notation

(- \infty, - 9) \cup (- 9, 0) \cup (0, \infty)

Solution steps

Find undefined (singularity) points:

x = 0, x = - 9

The function domain

x < - 9 or - 9 < x < 0 or x > 0

f (x) = 42 x - 3 x^{2}

f (x) = \frac{x ^{2} - 7}{x - 3}

\frac{4}{x + 3}

- cos (x)

f (x) = \frac{( 5 - x )}{( x ^{2} - 3 x )}

What is the domain of f(x)= 9/(\frac{x){x+9}} ?
The domain of f(x)= 9/(\frac{x){x+9}} is x<-9\lor-9<x<0\lor x>0